- forms and proportions of The 3D model most similar to the real object- detailed enough for close-up renders- the geometry of the model was created very neatly- there are no many-sided polygons- the model is ready and does not needed smoothing modifiers- for close-up renderer, you can apply the smoothing modifiers

- to all objects and materials names in scene are appropriated- real world size (system units - mm)- coordinates of location of the model in space (x0, y0, z0)- does not contain extraneous or hidden objects (lights, cameras, shapes etc.)